|
Summary of Significant Accounting Policies (Intangible Assets) (Details) (Favorable Lease Rates)
|
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
| Finite-Lived Intangible Assets [Line Items] | ||
| Favorable lease rates, original useful lives | 35 years 4 months 24 days | 36 years 4 months 24 days |
|
Minimum
|
||
| Finite-Lived Intangible Assets [Line Items] | ||
| Favorable lease rates, original useful lives | 41 years | |
|
Maximum
|
||
| Finite-Lived Intangible Assets [Line Items] | ||
| Favorable lease rates, original useful lives | 52 years | |